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Proceedings Paper

Fiber-reinforced composite analysis using optical coherence tomography after mechanical and thermal cycling
Author(s): B. B. C. Kyotoku; A. K. S. Braz; R. Braz; A. S. L. Gomes
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Paper Abstract

Fiber-reinforced composites are new materials which have been used for a variety of dental applications, including tooth splinting, replacement of missing teeth, treatment of dental emergencies, reinforcement of resin provisional fixed prosthodontic restorations, orthodontic retention, and other clinical applications. Different fiber types are available, but little clinical information has been disseminated. The traditional microscopy investigation, most commonly used to study this material, is a destructive technique, which requires specimen sectioning and are essentially surface measurements. On the basis of these considerations, the aim of this research is to analyze the interior of a dental sample reinforced with fiber after a mechanical and thermal cycling to emulate oral conditions using optical coherence tomography (OCT). The device we are using is a home built Fourier domain OCT working at 800 nm with 6 &mgr;m resolution. The results are compared with microscopy images to validate OCT as a working method. In long term, fractures allow bacterial invasion provoking plaque and calculus formation that can cause caries and periodontal disease. Therefore, non invasive imaging of the bridge fiber enables the possibility of periodic clinical evaluation to ensure the patient health. Furthermore, OCT images can provide a powerful method for quantitative analysis of crack propagation, and can potentially be used for in vivo assessment.

Paper Details

Date Published: 26 March 2007
PDF: 8 pages
Proc. SPIE 6425, Lasers in Dentistry XIII, 64250B (26 March 2007); doi: 10.1117/12.700929
Show Author Affiliations
B. B. C. Kyotoku, Univ. Federal de Pernambuco (Brazil)
A. K. S. Braz, Univ. Federal de Pernambuco (Brazil)
R. Braz, Univ. Federal de Pernambuco (Brazil)
A. S. L. Gomes, Univ. Federal de Pernambuco (Brazil)

Published in SPIE Proceedings Vol. 6425:
Lasers in Dentistry XIII
Peter Rechmann D.D.S.; Daniel Fried, Editor(s)

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